FON the largest WiFi community in the world has made an agreement with BT. Existing BT wireless users (I am actually one) need to opt in to be part of the BT FON community. Why is this on a mobile blog… well obviously with the number of WiFi enabled devices such as the iPhone (US now and UK next month) and the N95 this will provide more potential access points to connect via. The deal has been in the works for a while, we reported on rumours in Feb this year.